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[ARM] pxafb: add support for FBIOPAN_DISPLAY by dma braching

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dma branching is enabled by extending the current setup_frame_dma()
function to allow a 2nd set of frame/palette dma descriptors to be
used.

As a result, pxafb_dma_buff.dma_desc[], pxafb_dma_buff.pal_desc[]
and pxafb_info.fdadr[] are doubled.

This allows maximum re-use of the current dma setup code, although
the pxafb_info.fdadr[xx] for FBRx register values looks a bit odd.

Signed-off-by: Eric Miao <eric.miao@marvell.com>
Signed-off-by: Eric Miao <ycmiao@ycmiao-hp520.(none)>
This commit is contained in:
Eric Miao 2008-12-17 16:50:43 +08:00 • committed by Eric Miao
commit 6e354846e8
3 changed files with 59 additions and 21 deletions
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